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Add release note

This commit is contained in:
Eelco Dolstra 2024-10-08 16:49:35 +02:00
parent 7f6d006beb
commit e9b5704d1c

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---
synopsis: "`nix copy` supports `--profile` and `--out-link`"
prs: [11657]
---
The `nix copy` command now has flags `--profile` and `--out-link`, similar to `nix build`. `--profile` makes a profile point to the
top-level store path, while `--out-link` create symlinks to the top-level store paths.
For example, when updating the local NixOS system profile from a NixOS system closure on a remote machine, instead of
```
# nix copy --from ssh://server $path
# nix build --profile /nix/var/nix/profiles/system $path
```
you can now do
```
# nix copy --from ssh://server --profile /nix/var/nix/profiles/system $path
```
The advantage is that this avoids a time window where *path* is not a garbage collector root, and so could be deleted by a concurrent `nix store gc` process.